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authorgit perforce import user <a@b>2016-10-25 12:29:14 -0600
committerSheikh Dawood Abdul Ajees <Sheikh Dawood Abdul Ajees>2016-10-25 18:56:37 -0500
commit3dfe2108cfab31ba3ee5527e217d0d8e99a51162 (patch)
treefa6485c169e50d7415a651bf838f5bcd0fd3bfbd /PhysX_3.4/Samples/SampleVehicle/SampleVehicle_SceneQuery.h
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PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @ 21275617 [CL 21300167]
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#ifndef SAMPLEVEHICLE_UTILSCENEQUERY_H
+#define SAMPLEVEHICLE_UTILSCENEQUERY_H
+
+#include "common/PxPhysXCommonConfig.h"
+#include "vehicle/PxVehicleSDK.h"
+#include "foundation/PxPreprocessor.h"
+#include "PxScene.h"
+#include "PxBatchQueryDesc.h"
+
+using namespace physx;
+
+//Make sure that suspension raycasts only consider shapes flagged as drivable that don't belong to the owner vehicle.
+enum
+{
+ SAMPLEVEHICLE_DRIVABLE_SURFACE = 0xffff0000,
+ SAMPLEVEHICLE_UNDRIVABLE_SURFACE = 0x0000ffff
+};
+
+static PxQueryHitType::Enum SampleVehicleWheelRaycastPreFilter(
+ PxFilterData filterData0,
+ PxFilterData filterData1,
+ const void* constantBlock, PxU32 constantBlockSize,
+ PxHitFlags& queryFlags)
+{
+ //filterData0 is the vehicle suspension raycast.
+ //filterData1 is the shape potentially hit by the raycast.
+ PX_UNUSED(queryFlags);
+ PX_UNUSED(constantBlockSize);
+ PX_UNUSED(constantBlock);
+ PX_UNUSED(filterData0);
+ return ((0 == (filterData1.word3 & SAMPLEVEHICLE_DRIVABLE_SURFACE)) ? PxQueryHitType::eNONE : PxQueryHitType::eBLOCK);
+}
+
+
+//Set up query filter data so that vehicles can drive on shapes with this filter data.
+//Note that we have reserved word3 of the PxFilterData for vehicle raycast query filtering.
+void SampleVehicleSetupDrivableShapeQueryFilterData(PxFilterData* qryFilterData);
+
+//Set up query filter data so that vehicles cannot drive on shapes with this filter data.
+//Note that we have reserved word3 of the PxFilterData for vehicle raycast query filtering.
+void SampleVehicleSetupNonDrivableShapeQueryFilterData(PxFilterData* qryFilterData);
+
+//Set up query filter data for the shapes of a vehicle to ensure that vehicles cannot drive on themselves
+//but can drive on the shapes of other vehicles.
+//Note that we have reserved word3 of the PxFilterData for vehicle raycast query filtering.
+void SampleVehicleSetupVehicleShapeQueryFilterData(PxFilterData* qryFilterData);
+
+//Data structure for quick setup of scene queries for suspension raycasts.
+class SampleVehicleSceneQueryData
+{
+public:
+
+ //Allocate scene query data for up to maxNumWheels suspension raycasts.
+ static SampleVehicleSceneQueryData* allocate(const PxU32 maxNumWheels);
+
+ //Free allocated buffer for scene queries of suspension raycasts.
+ void free();
+
+ //Create a PxBatchQuery instance that will be used as a single batched raycast of multiple suspension lines of multiple vehicles
+ PxBatchQuery* setUpBatchedSceneQuery(PxScene* scene);
+
+ //Get the buffer of scene query results that will be used by PxVehicleNWSuspensionRaycasts
+ PxRaycastQueryResult* getRaycastQueryResultBuffer() {return mSqResults;}
+
+ //Get the number of scene query results that have been allocated for use by PxVehicleNWSuspensionRaycasts
+ PxU32 getRaycastQueryResultBufferSize() const {return mNumQueries;}
+
+ //Set the pre-filter shader
+ void setPreFilterShader(PxBatchQueryPreFilterShader preFilterShader) {mPreFilterShader=preFilterShader;}
+
+private:
+
+ //One result for each wheel.
+ PxRaycastQueryResult* mSqResults;
+ PxU32 mNbSqResults;
+
+ //One hit for each wheel.
+ PxRaycastHit* mSqHitBuffer;
+
+ //Filter shader used to filter drivable and non-drivable surfaces
+ PxBatchQueryPreFilterShader mPreFilterShader;
+
+ //Maximum number of suspension raycasts that can be supported by the allocated buffers
+ //assuming a single query and hit per suspension line.
+ PxU32 mNumQueries;
+
+ void init()
+ {
+ mPreFilterShader=SampleVehicleWheelRaycastPreFilter;
+ }
+
+ SampleVehicleSceneQueryData()
+ {
+ init();
+ }
+
+ ~SampleVehicleSceneQueryData()
+ {
+ }
+};
+
+
+#endif //SAMPLEVEHICLE_UTILSCENEQUERY_H